261=56-u

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Solution for 261=56-u equation: 



261=56-u

We move all terms to the left:

261-(56-u)=0

We add all the numbers together, and all the variables

-(-1u+56)+261=0

We get rid of parentheses

1u-56+261=0

We add all the numbers together, and all the variables

u+205=0

We move all terms containing u to the left, all other terms to the right

u=-205

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